A new message &1 has been created but text and description could not be updated automatically.
&1 - The name of the created message
When a Site is in learning mode it registers new messages (Actions from the web pages) as a two step process:
This message indicates that the message has been created - but that the description of the message could not be updated.
This is an error - but the created message can still be used.
If you want to you can update the message identified by parameter &1 manually.
This error is most unlikely to happen. However, it is conceivable that a record lock for the message might create this situation.